I have a 10 gallon with a 4" dsb and a bio-wheel filter, and nothing else. I have been thinking about buying a berlin air lift skimmer and using about 20 pounds of lr to have a nano reef. I plan on buying a coralife 20" PC(4 watts per gallon), and calcium and iodine and the usual additives. I want some kind of zoanthids and maybe some shrooms. Can I keep these? Also, can I just use the bio-wheel as a substitute for the powerhead? It is rated at 125 gph, and it really circulates the water. What fish can I have? Also, are there any other corals that I can have? Any input would be greatly appreciated. TIA